This Plugin adds Campaign Infos to the RSS URL and a option for a twitterable URL to tracking in Google Analytics or Piwik And now a Option to add a Q
Open Graph is used by some WebPages to agregate Page-Informations. For Excampe .
A QR-Code is a machine readable Image that encode Informations like a Weburl. User with readable devices like a smart phone can open the url direct in there device.